Embedding SoundCloud Widget in Ruby on Rails

I'm fairly new at integrating APIs in Ruby on Rails but I want to use Soundcloud's API to embed a player widget when provided a Soundcloud URL from a user. Right now I have the widgets embedded in my table through a test link. Each post contains string called link but I don't know how to reference it inside the controller. Or would I point to link in my view? Here's what I have so far. Any help would be appreciated.

class PostsController < ApplicationController

require 'soundcloud'

def index

    @client = Soundcloud.new(:client_id => 'xxxxx')
    @posts = Post.search(params[:search]).order(sort_column + " " + sort_direction)
    track = @client.get('/resolve', :url => post.link )
    @trackid = track.id

end


private

def set_post
    @post = Post.find(params[:id])
end

def post_params
    params.require(:post).permit(:link)
end

end

Here's the corresponding view.

<% provide(:title, 'Home') %>

<table>
  <thead>
    <tr>
      <th>Link</th>
    </tr>
  </thead>
  <tbody>
    <% @posts.each do |post| %>
      <td><div id="player"><object height="70" width="100%"><param name="movie" value="http://ift.tt/1ECyM9F @trackid %>&player_type=tiny{widgetParams}"></param>
      <param name="allowscriptaccess" value="always"></param>
      <param name="wmode" value="transparent"></param>
      <embed wmode="transparent" allowscriptaccess="always" height="18" width="100%"     src="https://player.soundcloud.com/player.swf?    url=http%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F{trackId}&player_type=tiny{widgetParams}">    </embed></object></div></td>
    <% end %>
 </tbody>